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Billing codes implementation notes, Mandatory versus optional billing codes – AASTRA 6700i series, 9143, 9480i, 9480i CT SIP Administrator Guide EN User Manual

Page 668

Billing codes implementation notes, Mandatory versus optional billing codes | AASTRA 6700i series, 9143, 9480i, 9480i CT SIP Administrator Guide EN User Manual | Page 668 / 1049 Billing codes implementation notes, Mandatory versus optional billing codes | AASTRA 6700i series, 9143, 9480i, 9480i CT SIP Administrator Guide EN User Manual | Page 668 / 1049